Air-purifying water-screen.



UNiTED sTATEs PATENT oEEroE.

.WILLIAM'J RAFVFERTY, OF CHICAGO, ILLINOIS.

.Am-PURIFYING wATEl-scnEzr-:m

To .all whom it may concenl:v

Be it known that I, WILLIAM J. RAFFERTY,

.a citizen of the-United States, residing at Chicago, in thecounty of Cook and State of Illinois, have invented new and useful Improvements in AirLPurifying Water-Screens,

of which the following is a speciiication.

This application is`a division of my 'ending application, Serial'No;`243,762, file February 1, 1905.

Y It relates particularly to a screen for re-4 moving dust and other impurities from air, embodying art of a system for heating, puriand istributing air'in buildings.

T e novel features of the screen wi be apparent from the following description and claims and the accompan In the drawings, Figure 1 1s a front eleva- Vtion of the screen. Fig. 2 is a vertical cross-V section thereof. -V Referring speciiically'to. the drawings, each screen-consists, preferably, of a web of loose strands of hemp or suitable fibrous material.

'-These strands are suitably attached to top and, bottom strips ic', .provided with snaprods or rollers mz.-

Water is supplied to the screen from a pipe W? above the same, which has a series of perforations, so as to continuously sprinkle the screen with water which drips downover the' hooks for connecting thesame to supporting strands. .-Anydust, soot, or other impurities in the air which' passes 'throu h the` screen is taken up-by the water whic Hows from, the screen to a trough W3 thereunder and thence to waste-pipe.

X? is, a lever with pawl-and-ratchet cori' nection to theroller for drawing the screen taut.

of the upper rod X. 'This rod is loosely44 Y Specification of Letters Patent. application led February 1,1905,Scziall'o.243,762. Dividodandthis application filed I'ebruary, 1906. Seriallo. 303,075.

drawings.

The screen 'is vibrated .laterally by means ratentefi Huch 5, i907.

mounted in its hangers, so that the screen is vibrated across thedirection of the air-current, andthe dust from the air is more effectively collected than if the screen were stationa Instead of employing strands of hemp to ,'form the curtain, as shown, the same may be made of erforated metal with slight corrugations, dbwn which the water will iiow, or of woven wire, wood, or other suitable material.

The apparatus is capable of summer use for moistening, purifying, and-coo fr the air, which is allowed to ow throug the fscreens, which, being sup lied with cold water, will c'ol the gair, as We as performing the `other functions indicated.

I claim- A 1. An air purifying and moistening a paratu's, comprismgla passage through w 'ch the air flows, as eet permeable to air, and having a iiow of water thereover, extending across said passage, and means to vibrate the sheet.

2. In an air purifying and moistening ap#` paratus, -the combination with a screen through which the air passes, and having a flow of water thereover, of means to vibrate. the screen.

43. In. an air purifying and'mo'istening apparatus, the combination with a screen through which the air passes, of a wateripe above the screen having a series of pe orations-from whichwater flows down over the screen, and means to vibrate the screen laterally.

In testimony whereof 'I have signed my name to this specification'in the presence of two subscribing witnesses.

. WILLIAM J. RAFFERTY.

. Witnesses:

SIGNA- FEL'rsxoG, H. G. BA'rcHnLon. 

